Michael Edward Hannigan
July 7, 1957 - May 19, 2026
I am so sorry to hear of Mike's passing.

Mike was one of the most gracious individuals i worked with. Sitting in meetings he had a scratch pad and would often do math problems, and said if you can draw a triangle he could talk for hours because most topics were hierarchical. He had a positive influence on all he worked with,and never had a meeting without a laugh.

Earl Doyle
Menomonee Falls , WI
Posted: 6/5/2026


I’m very sorry for your loss. I went to St. Rita and played football with Mike. He was one of the nicest and funniest guys I know. Quick wit and a great sense of humor.

Jim Wilson
Oak Lawn, IL
Posted: 6/3/2026


Very sorry for your loss

Nancy Carroll
Ben Lomond, CA
Posted: 5/27/2026


The pickleball community at Riverclub will remember you Michael & continues to support Molly!!!

Tom & Jill klitzke
Cedarburg , WI
Posted: 5/27/2026


I'm indebted to Mike for bringing me to JCI. He was a wonderful boss. So many memories with him over my career and how we originally worked at Landis & Gyr where we met. The laughs those years are still some of my favorite memories. Shouldn't be allowed to have that much fun at work. Prayers for the family.

Bridget Gallagher
Oakland Park, FL
Posted: 5/26/2026


I am so going to miss him & our love-pretend hate relationship. He made me laugh for 36 years, especially when I needed it the most. I’m sure everyone will say the same. He was a blessing & a flame has gone out in our earthly lives.

“Kim Ann”
Downers Grove, IL
Posted: 5/25/2026